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(11)

EP 1 725 925 A2

(12)

(88) Date of publication A3: 05.01.2006 (43) Date of publication: 29.11.2006 Bulletin 2006/48 (21) Application number: 05720836.5 (22) Date of filing: 09.03.2005

(51) International Patent Classification (IPC):  G06F 1/00(2006.01) (86) International application number: PCT/JP2005/004581 (87) International publication number: WO 2005/085980 (15.09.2005 Gazette 2005/37)

(84) Designated Contracting States: DE FR GB (30) Priority: 10.03.2004 JP 2004067846 (71) Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. Kadoma-shi, Osaka 571-8501 (JP)

(72) Inventors: YOKOTA, Kaoru, c/o Matsushita Elec. Ind. Co., Ltd. Chuo-ku, Osaka-shi, Osaka 540-6319 (JP) MATSUZAKI, Natsume, c/o Matsushita Elec. Ind. Co., Chuo-ku, Osaka-shi, Osaka 540-6319 (JP) NONAKA, Masao, c/o Matsushita Elec. Ind. Co., Ltd. Chuo-ku, Osaka-shi, Osaka 540-6319 (JP) INOUE, Mitsuhiro, c/o Matsushita Elec.Ind.Co.,Ltd. Chuo-ku, Osaka-shi, Osaka 540-6319 (JP) HIGASHI, Akio, c/o Matsushita Elec. Ind. Co., Ltd. Chuo-ku, Osaka-shi, Osaka 540-6319 (JP) NAKAHARA, Tohru, c/o Matsushita Elec. Ind.Co.,Ltd. Chuo-ku, Osaka-shi, Osaka 540-6319 (JP) (74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät  Maximilianstrasse 58 80538 München 80538 München (DE)